Lake Shore Model 218 Temperature Monitor User’s Manual
4-14
Operation
Alarms Setup and Operation (Continued)
The third display of the setting sequence appears, use
the Data Selection keys to cycle through source
selections for the selected input. There are four source
options:
K
Kelvin temperature reading from input.
C
Celsius temperature reading from input.
Sensor
Sensor units reading from input.
Linear
Linear equation data from input.
Press
Enter
when the desired source appears. The next
three displays involve data entry. Press Escape once to
clear the entry, twice to return to the Normal display.
The instrument retains values changed prior to pressing
Escape twice.
The fourth display in the setting sequence appears. Use
the number keys to input a high alarm setpoint in the
specified units, then press
Enter
. Resolution is five
digits.
The fifth display in the setting sequence appears. Use
the number keys to input a low alarm setpoint with the
specified source, then press
Enter
. Resolution is five
digits.
The sixth display in the setting sequence appears. Use
the number keys to input a dead band value with the
specified source, then press
Enter
. Used only with non-
latching alarm. Set to 0 if not used. Resolution is five
digits.
The seventh display in the setting sequence appears.
Use the Data Selection keys to turn alarm latching On or
Off, then press
Enter
. Latching determines whether the
alarm remains active after removing the cause.
On
Alarm active state is latched and remains active
until
Alarm Reset
is pressed.
Off
Alarm active state is not latched and clears
when the alarm condition is removed.
The eighth display in the setting sequence appears. Use
the Data Selection keys to turn the audible alarm On or
Off, then press
Enter
. This is a global parameter that
controls beeper operation for all input alarms.
On
Beeper sounds for any active alarm on any
input.
Off
Beeper will not sound for any active alarm on
any input.
After setting all alarm parameters, a list of the previous
alarm status of all inputs momentarily displays before
returning to the normal display.
Press
Escape
at any time to return to the normal
display. The instrument retains values changed prior to
pressing
Escape
.